Nut-lock.



W. F. KENNEY.

NUT LOCK. APPLICATION FILED 00121, 1907.

ATT EIF'QNEY PATENTED APR. 28, 1908.

UNITED STATES PATENT OFFICE.

WILLIAM F. KENNEY,OF PROVIDENCE, RHODE ISLAND.

NUT LGCK.

Application filed October 21, 1907.

T 0 all whom it may concern:

Be it known that I, WILLIAM F. KENNEY, a citizen of the United States, residing at Providence, in the State of .Rhode Island, have invented a new and useful Improve ment in Nut-Locks, of which the follow ng is a specification.

resents an axial section. Fig. 4 representsa Flg. 5 repre-;

face view of the-locking nut. sents an edge View of the ,same. Fig. 6 represents an axial section, showing the head of the ti htening screw at a position away from I the side of the locking nut.

In the drawing A represents the bolt provided with the external right hand screw thread a, and B the right hand screw thread. ed nut.

C is a left hand screw threaded locking nut provided atits side with the lateral projections 1), b, which are ad-a ted to fit over the edge faces 0, c, of the nut as clearly shown in Fig. 2. The bolt A is bored out and screw threaded to receive the left hand screwthreaded set screw D, which also fits the left hand screw-threaded bore of the nut C.

The length of the bolt A is made to conform to the requirements of the particular case in which it is'to be used, and the nut B screwed up thereon to the required degree of tightness, then the locking nut is to be placed with its inner face (I in close contact with the outer face of the nut B, as shown in Fig. 3 and then the set screw D inserted into the bore of the lockin nut C and screwed forward until it enters t e bore of the bolt A and then screwed up tight until the head a of the set screw bearstightly against the outer side f of the locking nut. Then the unscrew- Specification of Letters Patent.

Patented April 28, 1908.

Serial No. 398,523.

ing of the nut B from the IIO'ID'J hand screw threaded end of the bolt A wi be resisted by the action of the left hand screw threaded locking nut C and set screw.D, so that the nut A of the bolt will be positively locked against all unscrewing movement.

Then the nut B is tightened up to a position which does not allow the screw threads .of the locking nut C and ofthe bore of the bolt to coincide, then the head 6 of the set screw will not be brought up against the side of the locking nut; by reason of the gradual tightening of the displaced screw threads to a degree sufficient to lock'the nut B against outward movement as shown in Fi 6 and in such case, the locking nut C may Toe shifted around to the proper position relatively to the-nut B, for causing the tightening of the threads.

I claim as my invention 1. The combination of a bolt provided. with an external screw thread and a r. ersely screw-threaded bore, and the bolt nu fitting the said external screw thread, wit a set screw enga ing with the screw threat of the bore of the bolt, and the lockin nut arranged exteriorly of the end of the bolt in screwthreaded engagement with the set screw and also in locked engagement with the bolt nut, substantially as described.

2. The combination of a bolt provided with an external screw thread, and with a reversely screw-threaded bore, and the boltnut, with a set screw adapted to enter the bore of the bolt, the locking nut fitting the WILLIAM F. KENNEY.

VVitnes'ses SocRATEs SCHOLFIELD, JOHN W. Wants. 

